went dark. that was after pope benedict made his final public appearance in front of 15,000 people at saint peter's square. benedict is the first pope in 600 years to resign from the papacy. stay with us for continuing cufnlg of the farewell to -- continuing with the farewell to pope benedict. >>> researchers at ucsf say the cost of emergency care varies by tens of thousands of dollars depending on which hospital you are at. out of pocket charges for something like a sprain or muscle strain can cost as little as $4 or 24,000. headache treatments range from $15 to more than 17,000. a urinary tract infection might cost you $50 or $73,000. 2* calls for more transparency in emergency care charges. >>> forget skinny supermodels. bigger models can mean bigger profits. women are less likely to buy products if they are sold by models and celebrities. that's because thin women make them feel bad about themselves. researchers say a better way to increase sales is to use a more subtle image. >>> another warm, winter day, but changes are coming. >> yes, sandhya patel is here with the forecast.